Tipping device for wagons



Dec. 4, 1928. 1,693,874

C. R. SIROT TIPPING DEVICE FOR WAGON S Filed A ril 5, 1927 2Sheets-Sheet 1 Dec. 4, 1928. 1,693,874

c. R. SIROT TIPPING DEVICE FOR WAGONS Filed April 5, 1927 2 Sheets-Sheet2 Patented Dec. 4, 1928.

UNITED STATES 1,693,874 PATENT OFFICE.

CHARLES ROBERT SIROT, OF AUBERVILLIERS, FRANCE.

rrrrme nnvrcs non WAGONS.

- Application filed April 5, 1927, Serial No 181,098, and in France May22, 1926.

The invention relates to tipping devices for wagons of the kind in whichthe casing of a,

lifting jack is pivotally mounted so as to rock backwards and forwardswhen the body of the wagon is being raised. The object of this inventionis to provide means whereby the lifting angle can be greatly widened andat the same time overbalancing completely eliminated.

According to this invention the point of contact of the jack with thetipping body 1s caused to move backwards towards the rear of the vehiclewhile the body is being raised,

which, when the b0 y is being raised, is.

caused to run along an inclined surface which is rigidly secured to theunderside of the body. The body of the wagon is, of course, hinged tothe vehicle chassis at the rear end thereof in the usual manner.

If it is desired to use a lifting jack of small dimensions or a liftingjack which is pivotally secured to the underside of the body, themaximum lifting angle can be obtained by lowering the position of thehinge by which the frame of t e body is secured to the vehicle chassis.

In order that the invention may be clearl understood, I will nowdescribe the same with reference to the drawings herewith, of which Fig.1 is a part sectional view, showing the body in its horizontal ortravelling position.

Fig. 2 is a part sectional view showing the body raised to its fullextent.

Fig. 3 is a diagrammatic view illustrating the variations of the liftingangle obtained by lowering the back hinge while the length of thelifting jack remains unchanged.

Fig. 4 shows a decrease in the length of the lifting jack, obtained bylowerin the back hinge, the tipping angle of the b0 y remainingunchanged.

Fig. 5 shows by way of example a. practical embodiment of my invention.

Referrin first to Figs. 1 and 2, a is the inner mem er of the liftingjack b, which latter may be of any well-known construction. The casingof the lifting jack is pivoted to the chassis frame at a point 0. d is aroller provided on the end of the member a which bears against theunderside of the body I. f is a link one end of which is pivotallysecured to the top end of the member h of the vehicle, which may behinged together at i. j is an inclined surface which is secured betweenthe underside of the body Z and the frame lcfiigainst which surface theroller (Z of the member a: bears. As the body of the wagon is raised,the roller d rides along this inclined surface, thereby increasing theangle between the frame of the body and the chassis ofthe vehicle.

The inclined surface j is preferably formed of U-shaped section so as toprovide a guide and runway for the roller d. The sides of the U-shapedchannel can be closed at each end of the inclined surface to provide astop to limit the movement of the roller, and consequently, limit theraising or lowering of the body.

As the body of the wagon is raised, the lifting jack with its member awill be rocked towards the rear of the vehicle by the link 7 and theroller (Z will ride along the inclined surface 7'. These two combinedmovements will cause the body to be tipped to its maximum angle.

Referring now to Figs. 3 and 4, if it is desired to use a lifting jackwhich is pivotally i connected to the frame of the body and which has adirect thrust on the underside of the body, the maximum tipping anglecan be obtained by lowering the hinge i as far as possible. The maximumelevation of the body will of course be obtained when the hinge is atthe position i that is to say in the lowest position shown in Fig. 3.The lowering of this hinge will enable a lifting jack of reduced size tobe used for a given angle, as will be obvious by reference to F i 4 ofthe drawings. It is therefore possib e to obtain any desired liftingangle with a articular maximum length of jack by lowering the point i toi or i When a convenient angle for the body has been decided lifting themaximum length for the lifting upon,

jack can be ascertained.

Lifting means as above described may of course be applied to wagonswhich are desired to tip sidewoazs.

In the m 'fied form shown in Fig. 5, the

art j which is fixed at both ends to the frame 2 of the body has acurvilinear portion j extended by an inclined surface j, the latterending in a hook j which forms an abutment for the spindle e actingitself as a roller when the bod is raised to its fullest extent.

It wi 1 be understood that the lifting means herein described may beduplicated on both sides of the wagon. However, it is thoughtunnecessary to show this provision, since the lifting arrangement oneither side is an exact duflicate of that on the other.

declare that what I claim and desire to secure by Letters Patent of theUnited States 1s 1. Control mechanism for tilting wagons which comprisesa liftin jack hav' a iston, a ivot fixed for the sack on thd f rn-mg ofthe ve icle, a pivot at the end of the piston of the jack; 0. jointedlink on this Not, a pivot on the frame of the vehicle for the other endof the link, a pivot on the wagon connecting it to the frame and meansto stop the jack at the end of the lifting movement.

2. Control mechanism for tilting w ns which comprises a liftin jack, apivot ed on the frame of the vehicle, a ivot at the end of the piston ofthe jack, a re] er on a portion 7 CHARLES ROBERT smo'r.

